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java.lang.IllegalStateException: Already connected	at java.net.URLConnection.checkNotConnected(URLConnection.java:463)	at java.net.URLConnection.setDoOutput(URLConnection.java:877)	at damasoft.agata.Page1$InvioDati.onPostExecute(Page1.java:107)	at damasoft.agata.Page1$InvioDati.onPostExecute(Page1.java:60)	at android.os.AsyncTask.finish(AsyncTask.java:651)	at android.os.AsyncTask.access$500(AsyncTask.java:180)	at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:668)	at android.os.Handler.dispatchMessage(Handler.java:102)	at android.os.Looper.loop(Looper.java:158)	at android.app.ActivityThread.main(ActivityThread.java:7230)	at java.lang.reflect.Method.invoke(Native Method)	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)